TY  - BOOK
AU  - Ryan,William John
TI  - Water treatment and purification,
U1  - 628.3 
PY  - 1946///]
CY  - New York and London
PB  - McGraw-Hill book company, inc.
KW  - Water
KW  - Purification
KW  - Feed-water purification
KW  - MCE
ER  -